work stress

ive got my 1st real job I like it but there one giant well ... not so nice person I have to work with that talks down as if im second class. they are nice to even one else. everyone else is nice the customers n pay are great but I dont think im coping well

seeing my manager will just add to the fire as I believe most would brown nose if asked about it all there get is a slap on the had at most

just any tips how to deal with the stress im trying not to walk out that door